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Daily bookmarks: relevant news, facts and discoveries.

Engineering

BM25 ranks documents without embeddings

Published on February 9, 2026, the post explains how BM25 scores search results using term rarity, diminishing returns for repeated terms, and document length normalization, without requiring training, embeddings, or fine-tuning.

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Engineering

MaxRL proposes likelihood training for binary-reward RL

Published on February 9, 2026, the post presents MaxRL: additional rollouts approximate maximum-likelihood training with non-differentiable sampling. The post says the method reduces underweighting of difficult prompts and achieves up to 20× greater test-time efficiency than GRPO.

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Engineering

Hex-Rays: a presentation on microcode

Published on February 9, 2026, the entry describes a presentation on the internals of the Hex-Rays decompiler in IDA Pro, including microcode. The post points to a video and a PDF.

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Engineering

VOLT: an open-source GPU compiler

An article published on February 8, 2026 introduces VOLT, an open-source GPU compiler, and discusses emerging open GPU architectures that define SIMT features.

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Engineering

How GPUs Evolved from SIMD to SIMT

An ACM SIGGRAPH Blog article, published on February 5, 2026, describes how GPUs combined thread abstractions with SIMD hardware, becoming flexible processors for graphics, AI, and scientific computing.

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